Yb-doped large mode area tapered fiber with depressed cladding and dopant confinement
Autor: | Yves Taillon, Louis Desbiens, M. Boivin, Pierre Laperle, Bruno Labranche, Claude Paré, Vincent Roy |
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Rok vydání: | 2017 |
Předmět: |
All-silica fiber
Mode volume Materials science business.industry Plastic-clad silica fiber Polarization-maintaining optical fiber 02 engineering and technology 021001 nanoscience & nanotechnology Cladding (fiber optics) 01 natural sciences Graded-index fiber 010309 optics Mode field diameter Optics 0103 physical sciences Optoelectronics 0210 nano-technology business Hard-clad silica optical fiber |
Zdroj: | SPIE Proceedings. |
ISSN: | 0277-786X |
DOI: | 10.1117/12.2250864 |
Popis: | A polarization-maintaining Yb-doped large mode area fiber with depressed-index inner cladding layer and confinement of rare-earth dopants has been drawn as a long tapered fiber. The larger end features a core/clad diameter of 56/400 μm and core NA ~ 0.07, thus leading to an effective mode area over 1000 μm2. The fiber was tested up to 100 W average power, with near diffraction-limited output as the beam quality M2 was measured < 1.2. As effective single-mode guidance is enforced in the first section due to enhanced bending loss, subsequent adiabatic transition of the mode field in the taper section preserves single-mode amplification towards the larger end of the fiber. |
Databáze: | OpenAIRE |
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